Rufous-booted Racket-tail vs Green-crowned Plovercrest
Ocreatus addae so với Stephanoxis lalandi
Side-by-Side Comparison
| Thuộc Tính | Rufous-booted Racket-tail | Green-crowned Plovercrest |
|---|---|---|
| Tên Khoa Học | Ocreatus addae | Stephanoxis lalandi |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Trochilidae | Trochilidae |
| Tình Trạng Bảo Tồn | Not Evaluated | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | — | 9,6 cm (3.8 in) |
| Khối Lượng | 3,0 g (0.11 oz) | 3,15 g (0.11 oz) |
| Chế Độ Ăn | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … | Nectarivore of Atlantic Forest in Brazil, probing at Lobelia and bromeliads. Supplements diet with small … |
| Số Trứng | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Rufous-booted Racket-tail only
Không
Green-crowned Plovercrest only
Không
Song & Call Comparison
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Green-crowned Plovercrest
Deep, hollow churring resonant trill; prolonged low buzzing sound vibrating through dense tropical riparian forest.
Geographic Range & Migration
Rufous-booted Racket-tail
Found in cloud forests of northern Bolivia and adjacent Peru and Brazil at 400–1,400 m elevation.
Green-crowned Plovercrest
Found in southeastern Brazil, eastern Paraguay, and northeastern Argentina. Resident in Atlantic Forest and cerrado edges.
Tình Trạng Bảo Tồn
Rufous-booted Racket-tail
Green-crowned Plovercrest
How to Tell Them Apart
Rufous-booted Racket-tail
Golden-bellied Starfrontlet: tiny; males with brilliant orange-gold belly; violet gorget; females green above; spotted buff below
Green-crowned Plovercrest
Bannerman's Turaco: brilliant iridescent green body; red crest; crimson flight feathers; white orbital ring; red bill
About These Birds
Rufous-booted Racket-tail
A small hummingbird (8-10 cm plus tail rackets) found in Andean cloud forests of southeastern Peru and Bolivia at 1,200-2,200 m. Males have rufous leg puffs instead of white. Recently split from Booted Racket-tail. Nectarivore of montane forest undergrowth.
Green-crowned Plovercrest
A small hummingbird (9-10 cm) found in southeastern Brazil, eastern Paraguay, and northeastern Argentina. Males have a distinctive green crest resembling a plover's. Nectarivore of Atlantic Forest and cerrado edges. Named plovercrest for the erect green crest.